Yesterday I asked Robert Broglia about if take his emulators on OUYA. Robert has emulators like MD.emu, GBA.emu, Neo.emu, NES.emu, 2600.emu, and more, on Android. He responded via Twitter:
I: your emulators coming to Ouya?
Robert: Yes, I'll look into Ouya support once the dev tools are released.
Very very interesting
Also the ODK code doesn't write itself.
Codlab also tweeted us saying
@OUYAForum_com i'll also port gb/gba one on the ouya as soon as i can get the ODK but quite exensive x)
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He said he would look at porting them, it doesn't mean that they absolutely are...
It's worth noting that there aren't enough buttons on the controller to do much emulation. NES would work well enough. SNES could be done, but start and select would have to be bound to two of the four L/R buttons. I don't know if PSX and N64 emulation are even possible with Ouya's controller. Not enough buttons.
You could surely bind some buttons to the touchpad? ie Left half for start, Right half for select?
Sure, those bindings will... work. But it'll be a grossly inferior experience to the original platforms' native controller.
I am not sure we'll get a user experience comparable to real PSX or N64 (or even SNES) until we start seeing alternative controllers available for Ouya that have more buttons. We need something like a Gravis Gamepad Pro for PSX/SNES and most likely a real N64 controller rigged to Ouya somehow to do N64.
Personally I would use the touchpad as the C-pad by dividing it into four quadrants (like I did for the Xperia Play port of my emulator). This is superior to using the analog stick, because it avoids the problem of hitting diagonals resulting in unintentional 2 button presses, and makes it so opposites can be pressed simultaneously (not that that was ever needed for any N64 games AFAIK - maybe for combo codes or something but certainly rare). That said, the OUYA does have a USB port so N64 and other controllers can be easily adapted to USB and connected to the OUYA, and bluetooth is also an option. I'm also personally working on a project to hack a N64 controller so that it appears to be a native OUYA controller to the console. If I'm successful, I'll also post the specs for that so others can copy it.